diff options
Diffstat (limited to 'src/network')
55 files changed, 1570 insertions, 0 deletions
diff --git a/src/network/__dns.c b/src/network/__dns.c new file mode 100644 index 00000000..73ec422d --- /dev/null +++ b/src/network/__dns.c @@ -0,0 +1,267 @@ +#include <stdint.h> +#include <netdb.h> +#include <stdio.h> +#include <fcntl.h> +#include <limits.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/select.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <time.h> +#include <ctype.h> +#include <unistd.h> +#include "__dns.h" +#include "stdio_impl.h" + +#define TIMEOUT 5 +#define RETRY 1 +#define PACKET_MAX 512 +#define PTR_MAX (64 + sizeof ".in-addr.arpa") + +int __dns_doqueries(unsigned char *dest, const char *name, int *rr, int rrcnt) +{ + time_t t0 = time(0); + int fd; + FILE *f, _f; + unsigned char _buf[64]; + char line[64], *s, *z; + union { + struct sockaddr_in sin; + struct sockaddr_in6 sin6; + } sa = {0}, ns[3] = {{0}}; + socklen_t sl; + int nns; + int family; + unsigned char q[280] = "", *r = dest; + int ql; + int rlen; + int got = 0, failed = 0; + int errcode = EAI_AGAIN; + int i, j; + struct timeval tv; + fd_set fds; + int id; + + /* Construct query template - RR and ID will be filled later */ + if (strlen(name)-1 >= 254U) return -1; + q[2] = q[5] = 1; + strcpy(q+13, name); + for (i=13; q[i]; i=j+1) { + for (j=i; q[j] && q[j] != '.'; j++); + if (j-i-1u > 62u) return -1; + q[i-1] = j-i; + } + q[i+3] = 1; + ql = i+4; + + /* Make a reasonably unpredictable id */ + gettimeofday(&tv, 0); + id = tv.tv_usec + tv.tv_usec/256 & 0xffff; + + /* Get nameservers from resolv.conf, fallback to localhost */ + f = __fopen_rb_ca("/etc/resolv.conf", &_f, _buf, sizeof _buf); + if (f) for (nns=0; nns<3 && fgets(line, sizeof line, f); ) { + if (strncmp(line, "nameserver", 10) || !isspace(line[10])) + continue; + for (s=line+11; isspace(*s); s++); + for (z=s; *z && !isspace(*z); z++); + *z=0; + if (__ipparse(ns+nns, family, s) < 0) continue; + ns[nns].sin.sin_port = htons(53); + family = ns[nns++].sin.sin_family; + sl = family==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin; + } + if (f) __fclose_ca(f); + if (!nns) { + ns[0].sin.sin_family = AF_INET; + ns[0].sin.sin_port = htons(53); + nns=1; + sl = sizeof sa.sin; + } + + /* Get local address and open/bind a socket */ + sa.sin.sin_family = family; + fd = socket(family, SOCK_DGRAM, 0); + if (bind(fd, (void *)&sa, sl) < 0) { + close(fd); + return -1; + } + /* Nonblocking to work around Linux UDP select bug */ + fcntl(fd, F_SETFL, fcntl(fd, F_GETFL, 0) | O_NONBLOCK); + + /* Loop until we timeout; break early on success */ + for (; time(0)-t0 < TIMEOUT; ) { + + /* Query all configured namservers in parallel */ + for (i=0; i<rrcnt; i++) if (rr[i]) for (j=0; j<nns; j++) { + q[0] = id+i >> 8; + q[1] = id+i; + q[ql-3] = rr[i]; + sendto(fd, q, ql, MSG_NOSIGNAL, (void *)&ns[j], sl); + } + + /* Wait for a response, or until time to retry */ + FD_ZERO(&fds); + FD_SET(fd, &fds); + tv.tv_sec = RETRY; + tv.tv_usec = 0; + if (select(fd+1, &fds, 0, 0, &tv) <= 0) continue; + + /* Process any and all replies */ + while (got+failed < rrcnt && (rlen = recvfrom(fd, r, 512, 0, + (void *)&sa, (socklen_t[1]){sl})) >= 2) + { + /* Ignore replies from addresses we didn't send to */ + for (i=0; i<nns; i++) if (!memcmp(ns+i, &sa, sl)) break; + if (i==nns) continue; + + /* Compute index of the query from id */ + i = r[0]*256+r[1] - id & 0xffff; + if ((unsigned)i >= rrcnt || !rr[i]) continue; + + /* Interpret the result code */ + switch (r[3] & 15) { + case 0: + got++; + break; + case 3: + if (1) errcode = EAI_NONAME; else + default: + errcode = EAI_FAIL; + failed++; + } + + /* Mark this record as answered */ + rr[i] = 0; + r += 512; + } + + /* Check to see if we have answers to all queries */ + if (got+failed == rrcnt) break; + } + close(fd); + + /* Return the number of results, or an error code if none */ + if (got) return got; + return errcode; +} + +static void mkptr4(char *s, const unsigned char *ip) +{ + sprintf(s, "%d.%d.%d.%d.in-addr.arpa", + ip[3], ip[2], ip[1], ip[0]); +} + +static void mkptr6(char *s, const unsigned char *ip) +{ + static const char xdigits[] = "0123456789abcdef"; + int i; + for (i=15; i>=0; i--) { + *s++ = xdigits[ip[i]&15]; *s++ = '.'; + *s++ = xdigits[ip[i]>>4]; *s++ = '.'; + } + strcpy(s, "ip6.arpa"); +} + +int __dns_query(unsigned char *r, const void *a, int family, int ptr) +{ + char buf[PTR_MAX]; + int rr[2], rrcnt = 1; + + if (ptr) { + if (family == AF_INET6) mkptr6(buf, a); + else mkptr4(buf, a); + rr[0] = RR_PTR; + a = buf; + } else if (family == AF_INET6) { + rr[0] = RR_AAAA; + } else { + rr[0] = RR_A; + if (family != AF_INET) rr[rrcnt++] = RR_AAAA; + } + + return __dns_doqueries(r, a, rr, rrcnt); +} + + +#define BITOP(a,b,op) \ + ((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a)))) + +static int decname(char *s, const unsigned char *b, const unsigned char *p) +{ + /* Remember jump destinations to detect loops and abort */ + size_t seen[PACKET_MAX/8/sizeof(size_t)] = { 0 }; + char *sz = s + HOST_NAME_MAX; + const unsigned char *pz = b+512; + for (;;) { + if (p>=pz) return -1; + else if (*p&0xc0) { + int j = (p[0]&1) | p[1]; + if (BITOP(seen, j, &)) return -1; + BITOP(seen, j, |=); + p = b + j; + } else if (*p) { + if (p+*p+1>=pz || s+*p>=sz) return -1; + memcpy(s, p+1, *p); + s += *p+1; + p += *p+1; + s[-1] = *p ? '.' : 0; + } else return 0; + } +} + +int __dns_get_rr(void *dest, size_t stride, size_t maxlen, size_t limit, const unsigned char *r, int rr, int dec) +{ + int qdcount, ancount; + const unsigned char *p; + char tmp[256]; + int found = 0; + int len; + + if ((r[3]&15)) return 0; + p = r+12; + qdcount = r[4]*256 + r[5]; + ancount = r[6]*256 + r[7]; + if (qdcount+ancount > 64) return -1; + while (qdcount--) { + while (p-r < 512 && *p-1U < 127) p++; + if (*p>193 || (*p==193 && p[1]>254) || p>r+506) + return -1; + p += 5 + !!*p; + } + while (ancount--) { + while (p-r < 512 && *p-1U < 127) p++; + if (*p>193 || (*p==193 && p[1]>254) || p>r+506) + return -1; + p += 1 + !!*p; + len = p[8]*256 + p[9]; + if (p+len > r+512) return -1; + if (p[1]==rr && len <= maxlen) { + if (dec && decname(tmp, r, p+10)<0) return -1; + if (dest && limit) { + if (dec) strcpy(dest, tmp); + else memcpy(dest, p+10, len); + dest = (char *)dest + stride; + limit--; + } + found++; + } + p += 10 + len; + } + return found; +} + +int __dns_count_addrs(const unsigned char *r, int cnt) +{ + int found=0, res, i; + static const int p[2][2] = { { 4, RR_A }, { 16, RR_AAAA } }; + + while (cnt--) for (i=0; i<2; i++) { + res = __dns_get_rr(0, 0, p[i][0], -1, r, p[i][1], 0); + if (res < 0) return res; + found += res; + r += 512; + } + return found; +} diff --git a/src/network/__dns.h b/src/network/__dns.h new file mode 100644 index 00000000..9a3f7402 --- /dev/null +++ b/src/network/__dns.h @@ -0,0 +1,14 @@ +#include <stddef.h> + +#define RR_A 1 +#define RR_CNAME 5 +#define RR_PTR 12 +#define RR_AAAA 28 + +int __dns_count_addrs(const unsigned char *, int); +int __dns_get_rr(void *, size_t, size_t, size_t, const unsigned char *, int, int); + +int __dns_query(unsigned char *, const void *, int, int); +int __ipparse(void *, int, const char *); + +int __dns_doqueries(unsigned char *, const char *, int *, int); diff --git a/src/network/__ipparse.c b/src/network/__ipparse.c new file mode 100644 index 00000000..ca9e5890 --- /dev/null +++ b/src/network/__ipparse.c @@ -0,0 +1,40 @@ +#include <string.h> +#include <stdlib.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include "__dns.h" +#include <stdio.h> + +int __ipparse(void *dest, int family, const char *s) +{ + unsigned char *d = dest; + unsigned long a[16] = { 0 }; + const char *z; + int i; + + if (family == AF_INET6) goto not_v4; + + for (i=0; i<4 && *s; i++) { + a[i] = strtoul(s, (char **)&z, 0); + if (z==s || (*z && *z != '.')) goto not_v4; + s=z+1; + } + switch (i) { + case 0: + a[1] = a[0] & 0xffffff; + a[0] >>= 24; + case 1: + a[2] = a[1] & 0xffff; + a[1] >>= 16; + case 2: + a[3] = a[2] & 0xff; + a[2] >>= 8; + } + ((struct sockaddr_in *)d)->sin_family = AF_INET; + d = (void *)&((struct sockaddr_in *)d)->sin_addr; + for (i=0; i<4; i++) d[i] = a[i]; + return 0; + +not_v4: + return -1; +} diff --git a/src/network/accept.c b/src/network/accept.c new file mode 100644 index 00000000..83704096 --- /dev/null +++ b/src/network/accept.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +int accept(int fd, struct sockaddr *addr, socklen_t *len) +{ + unsigned long args[] = { fd, (unsigned long)addr, (unsigned long)len }; + int ret; + CANCELPT_BEGIN; + ret = syscall2(__NR_socketcall, SYS_ACCEPT, (long)args); + CANCELPT_END; + return ret; +} diff --git a/src/network/bind.c b/src/network/bind.c new file mode 100644 index 00000000..3bef382c --- /dev/null +++ b/src/network/bind.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int bind(int fd, const struct sockaddr *addr, socklen_t len) +{ + unsigned long args[] = { fd, (unsigned long)addr, len }; + return syscall2(__NR_socketcall, SYS_BIND, (long)args); +} diff --git a/src/network/connect.c b/src/network/connect.c new file mode 100644 index 00000000..6074122e --- /dev/null +++ b/src/network/connect.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +int connect(int fd, const struct sockaddr *addr, socklen_t len) +{ + unsigned long args[] = { fd, (unsigned long)addr, len }; + int ret; + CANCELPT_BEGIN; + ret = syscall2(__NR_socketcall, SYS_CONNECT, (long)args); + CANCELPT_END; + return ret; +} diff --git a/src/network/dn_expand.c b/src/network/dn_expand.c new file mode 100644 index 00000000..01b449bb --- /dev/null +++ b/src/network/dn_expand.c @@ -0,0 +1,28 @@ +#include <resolv.h> +#include <string.h> + +#define BITOP(a,b,op) \ + ((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a)))) + +int dn_expand(unsigned char *b, unsigned char *pz, unsigned char *p, unsigned char *s, int outlen) +{ + /* Remember jump destinations to detect loops and abort */ + size_t seen[512/8/sizeof(size_t)] = { 0 }; + unsigned char *sz = s + outlen; + if (pz-b > 512) return -1; + for (;;) { + if (p>=pz) return -1; + else if (*p&0xc0) { + int j = (p[0]&1) | p[1]; + if (BITOP(seen, j, &)) return -1; + BITOP(seen, j, |=); + p = b + j; + } else if (*p) { + if (p+*p+1>=pz || s+*p>=sz) return -1; + memcpy(s, p+1, *p); + s += *p+1; + p += *p+1; + s[-1] = *p ? '.' : 0; + } else return 0; + } +} diff --git a/src/network/ent.c b/src/network/ent.c new file mode 100644 index 00000000..4c2f24b5 --- /dev/null +++ b/src/network/ent.c @@ -0,0 +1,26 @@ +#include "libc.h" + +void sethostent(int x) +{ +} + +void *gethostent() +{ + return 0; +} + +void endhostent(void) +{ +} + +weak_alias(sethostent, setnetent); +weak_alias(gethostent, getnetent); +weak_alias(endhostent, endnetent); + +weak_alias(sethostent, setservent); +weak_alias(gethostent, getservent); +weak_alias(endhostent, endservent); + +weak_alias(sethostent, setprotoent); +weak_alias(gethostent, getprotoent); +weak_alias(endhostent, endprotoent); diff --git a/src/network/freeaddrinfo.c b/src/network/freeaddrinfo.c new file mode 100644 index 00000000..df3798ae --- /dev/null +++ b/src/network/freeaddrinfo.c @@ -0,0 +1,7 @@ +#include <stdlib.h> +#include <netdb.h> + +void freeaddrinfo(struct addrinfo *p) +{ + free(p); +} diff --git a/src/network/gai_strerror.c b/src/network/gai_strerror.c new file mode 100644 index 00000000..ea00bed7 --- /dev/null +++ b/src/network/gai_strerror.c @@ -0,0 +1,21 @@ +#include <netdb.h> + +static const char msgs[] = + "Invalid flags\0" + "Name does not resolve\0" + "Try again\0" + "Non-recoverable error\0" + "Unrecognized address family or invalid length\0" + "Unrecognized socket type\0" + "Unrecognized service\0" + "Out of memory\0" + "System error\0" + "Overflow\0" + "\0Unknown error"; + +const char *gai_strerror(int ecode) +{ + const char *s; + for (s=msgs, ecode++; ecode && *s; ecode++, s++) for (; *s; s++); + return *s ? s : s+1; +} diff --git a/src/network/getaddrinfo.c b/src/network/getaddrinfo.c new file mode 100644 index 00000000..90e85f6a --- /dev/null +++ b/src/network/getaddrinfo.c @@ -0,0 +1,224 @@ +#include <stdlib.h> +#include <stdio.h> +#include <netdb.h> +#include <netinet/in.h> +#include <sys/socket.h> +#include <unistd.h> +#include <string.h> +#include <ctype.h> +#include "__dns.h" +#include "stdio_impl.h" + +static int is_valid(const char *host) +{ + const unsigned char *s; + if (strlen(host)-1 > 254 || mbstowcs(0, host, 0) > 255) return 0; + for (s=host; *s>=0x80 || *s=='.' || *s=='-' || isalnum(*s); s++); + return !*s; +} + +#if 0 +static int have_af(int family) +{ + struct sockaddr_in6 sin6 = { .sin6_family = family }; + socklen_t sl = family == AF_INET + ? sizeof(struct sockaddr_in) + : sizeof(struct sockaddr_in6); + int sock = socket(family, SOCK_STREAM, 0); + int have = !bind(sock, (void *)&sin6, sl); + close(sock); + return have; +} +#endif + +#include <stdlib.h> +#include <netdb.h> + +union sa { + struct sockaddr_in sin; + struct sockaddr_in6 sin6; +}; + +struct aibuf { + struct addrinfo ai; + union sa sa; +}; + +/* Extra slots needed for storing canonical name */ +#define EXTRA ((256+sizeof(struct aibuf)-1)/sizeof(struct aibuf)) + +int getaddrinfo(const char *host, const char *serv, const struct addrinfo *hint, struct addrinfo **res) +{ + int flags = hint ? hint->ai_flags : 0; + int family = hint ? hint->ai_family : AF_UNSPEC; + int type = hint ? hint->ai_socktype : 0; + int proto = hint ? hint->ai_protocol : 0; + unsigned long port = 0; + struct aibuf *buf; + union sa sa = {{0}}; + unsigned char reply[1024]; + int i, j; + //char hostbuf[256]; + char line[512]; + FILE *f, _f; + unsigned char _buf[64]; + char *z; + int result; + int cnt; + + if (host && strlen(host)>255) return EAI_NONAME; + if (serv && strlen(serv)>32) return EAI_SERVICE; + + if (type && !proto) + proto = type==SOCK_DGRAM ? IPPROTO_UDP : IPPROTO_TCP; + if (!type && proto) + type = proto==IPPROTO_UDP ? SOCK_DGRAM : SOCK_STREAM; + + if (serv) { + port = strtoul(serv, &z, 0); + if (!*z && port > 65535) return EAI_SERVICE; + if (!port) { + if (flags & AI_NUMERICSERV) return EAI_SERVICE; + + //f = fopen("/etc/services", "rb"); + return EAI_SERVICE; + } + port = htons(port); + } + + if (!host) { + if (family == AF_UNSPEC) family = AF_INET; + buf = calloc(sizeof *buf, 1+EXTRA); + if (!buf) return EAI_MEMORY; + buf->ai.ai_protocol = proto; + buf->ai.ai_socktype = type; + buf->ai.ai_addr = (void *)&buf->sa; + buf->ai.ai_addrlen = family==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin; + buf->ai.ai_family = family; + buf->sa.sin.sin_family = family; + buf->sa.sin.sin_port = port; + if (!(flags & AI_PASSIVE)) { + if (family == AF_INET) { + 0[(uint8_t*)&buf->sa.sin.sin_addr.s_addr]=127; + 3[(uint8_t*)&buf->sa.sin.sin_addr.s_addr]=1; + } else buf[0].sa.sin6.sin6_addr.s6_addr[15] = 1; + } + *res = &buf->ai; + return 0; + } + + /* Try as a numeric address */ + if (__ipparse(&sa, family, host) >= 0) { + buf = calloc(sizeof *buf, 1+EXTRA); + if (!buf) return EAI_MEMORY; + family = sa.sin.sin_family; + buf->ai.ai_protocol = proto; + buf->ai.ai_socktype = type; + buf->ai.ai_addr = (void *)&buf->sa; + buf->ai.ai_addrlen = family==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin; + buf->ai.ai_family = family; + buf->sa = sa; + buf->sa.sin.sin_port = port; + *res = &buf->ai; + return 0; + } + + if (flags & AI_NUMERICHOST) return EAI_NONAME; + + f = __fopen_rb_ca("/etc/hosts", &_f, _buf, sizeof _buf); + if (f) while (fgets(line, sizeof line, f)) { + char *p; + size_t l = strlen(host); + + if ((p=strchr(line, '#'))) *p++='\n', *p=0; + for(p=line+1; (p=strstr(p, host)) && + (!isspace(p[-1]) || !isspace(p[l])); p++); + if (!p) continue; + __fclose_ca(f); + + /* Isolate IP address to parse */ + for (p=line; *p && !isspace(*p); p++); + *p++ = 0; + if (__ipparse(&sa, family, line) < 0) return EAI_NONAME; + + /* Allocate and fill result buffer */ + buf = calloc(sizeof *buf, 1+EXTRA); + if (!buf) return EAI_MEMORY; + family = sa.sin.sin_family; + buf->ai.ai_protocol = proto; + buf->ai.ai_socktype = type; + buf->ai.ai_addr = (void *)&buf->sa; + buf->ai.ai_addrlen = family==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin; + buf->ai.ai_family = family; + buf->sa = sa; + buf->sa.sin.sin_port = port; + + /* Extract first name as canonical name */ + for (; *p && isspace(*p); p++); + buf->ai.ai_canonname = (void *)(buf+1); + snprintf(buf->ai.ai_canonname, 256, "%s", p); + for (p=buf->ai.ai_canonname; *p && !isspace(*p); p++); + *p = 0; + if (!is_valid(buf->ai.ai_canonname)) + buf->ai.ai_canonname = 0; + + *res = &buf->ai; + return 0; + } + if (f) __fclose_ca(f); + +#if 0 + f = __fopen_rb_ca("/etc/resolv.conf", &_f, _buf, sizeof _buf); + if (f) while (fgets(line, sizeof line, f)) { + if (!isspace(line[10]) || (strncmp(line, "search", 6) + && strncmp(line, "domain", 6))) continue; + } + if (f) __fclose_ca(f); +#endif + + /* Perform one or more DNS queries for host */ + memset(reply, 0, sizeof reply); + result = __dns_query(reply, host, family, 0); + if (result < 0) return result; + + cnt = __dns_count_addrs(reply, result); + if (cnt <= 0) return EAI_NONAME; + + buf = calloc(sizeof *buf, cnt+EXTRA); + if (!buf) return EAI_MEMORY; + + i = 0; + if (family != AF_INET6) { + j = __dns_get_rr(&buf[i].sa.sin.sin_addr, sizeof *buf, 4, cnt-i, reply, RR_A, 0); + while (j--) buf[i++].sa.sin.sin_family = AF_INET; + } + if (family != AF_INET) { + j = __dns_get_rr(&buf[i].sa.sin6.sin6_addr, sizeof *buf, 16, cnt-i, reply, RR_AAAA, 0); + while (j--) buf[i++].sa.sin.sin_family = AF_INET6; + } + if (result>1) { + j = __dns_get_rr(&buf[i].sa.sin.sin_addr, sizeof *buf, 4, cnt-i, reply+512, RR_A, 0); + while (j--) buf[i++].sa.sin.sin_family = AF_INET; + j = __dns_get_rr(&buf[i].sa.sin6.sin6_addr, sizeof *buf, 16, cnt-i, reply+512, RR_AAAA, 0); + while (j--) buf[i++].sa.sin.sin_family = AF_INET6; + } + + if (__dns_get_rr((void *)&buf[cnt], 0, 256, 1, reply, RR_CNAME, 1) < 0) + strcpy((void *)&buf[cnt], host); + + for (i=0; i<cnt; i++) { + buf[i].ai.ai_protocol = proto; + buf[i].ai.ai_socktype = type; + buf[i].ai.ai_addr = (void *)&buf[i].sa; + buf[i].ai.ai_addrlen = buf[i].sa.sin.sin_family==AF_INET6 + ? sizeof sa.sin6 : sizeof sa.sin; + buf[i].ai.ai_family = buf[i].sa.sin.sin_family; + buf[i].sa.sin.sin_port = port; + buf[i].ai.ai_next = &buf[i+1].ai; + buf[i].ai.ai_canonname = (void *)&buf[cnt]; + } + buf[cnt-1].ai.ai_next = 0; + *res = &buf->ai; + + return 0; +} diff --git a/src/network/gethostbyaddr.c b/src/network/gethostbyaddr.c new file mode 100644 index 00000000..51e1c569 --- /dev/null +++ b/src/network/gethostbyaddr.c @@ -0,0 +1,15 @@ +#define _GNU_SOURCE + +#include <netdb.h> +#include <string.h> +#include <netinet/in.h> + +struct hostent *gethostbyaddr(const void *a, socklen_t l, int af) +{ + static struct hostent h; + static long buf[512/sizeof(long)]; + struct hostent *res; + if (gethostbyaddr_r(a, l, af, &h, + (void *)buf, sizeof buf, &res, &h_errno)) return 0; + return &h; +} diff --git a/src/network/gethostbyaddr_r.c b/src/network/gethostbyaddr_r.c new file mode 100644 index 00000000..cdb1d503 --- /dev/null +++ b/src/network/gethostbyaddr_r.c @@ -0,0 +1,71 @@ +#define _GNU_SOURCE + +#include <sys/socket.h> +#include <netdb.h> +#include <string.h> +#include <netinet/in.h> +#include <errno.h> +#include <inttypes.h> + +int gethostbyaddr_r(const void *a, socklen_t l, int af, + struct hostent *h, char *buf, size_t buflen, + struct hostent **res, int *err) +{ + union { + struct sockaddr_in sin; + struct sockaddr_in6 sin6; + } sa = { .sin.sin_family = af }; + socklen_t sl = af==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin; + int i; + + /* Load address argument into sockaddr structure */ + if (af==AF_INET6 && l==16) memcpy(&sa.sin6.sin6_addr, a, 16); + else if (af==AF_INET && l==4) memcpy(&sa.sin.sin_addr, a, 4); + else { + *err = NO_RECOVERY; + return -1; + } + + /* Align buffer and check for space for pointers and ip address */ + i = (uintptr_t)buf & sizeof(char *)-1; + if (!i) i = sizeof(char *); + if (buflen <= 5*sizeof(char *)-i + l) { + errno = ERANGE; + return -1; + } + buf += sizeof(char *)-i; + buflen -= 5*sizeof(char *)-i + l; + + h->h_addr_list = (void *)buf; + buf += 2*sizeof(char *); + h->h_aliases = (void *)buf; + buf += 2*sizeof(char *); + + h->h_addr_list[0] = buf; + memcpy(h->h_addr_list[0], a, l); + buf += l; + h->h_addr_list[1] = 0; + h->h_aliases[0] = buf; + h->h_aliases[1] = 0; + + switch (getnameinfo((void *)&sa, sl, buf, buflen, 0, 0, 0)) { + case EAI_AGAIN: + *err = TRY_AGAIN; + return -1; + case EAI_OVERFLOW: + errno = ERANGE; + default: + case EAI_MEMORY: + case EAI_SYSTEM: + case EAI_FAIL: + *err = NO_RECOVERY; + return -1; + case 0: + break; + } + + h->h_addrtype = af; + h->h_name = h->h_aliases[0]; + *res = h; + return 0; +} diff --git a/src/network/gethostbyname.c b/src/network/gethostbyname.c new file mode 100644 index 00000000..5088a51e --- /dev/null +++ b/src/network/gethostbyname.c @@ -0,0 +1,63 @@ +#define _GNU_SOURCE + +#include <sys/socket.h> +#include <netdb.h> +#include <string.h> +#include <netinet/in.h> + +struct hostent *gethostbyname(const char *name) +{ + return gethostbyname2(name, AF_INET); +} + +#if 0 +struct hostent *gethostbyname(const char *name) +{ + static struct hostent h; + static char *h_aliases[3]; + static char h_canon[256]; + static char *h_addr_list[10]; + static char h_addr_data[10][4]; + static const struct addrinfo hint = { + .ai_family = AF_INET, .ai_flags = AI_CANONNAME + }; + struct addrinfo *ai, *p; + int i; + + switch (getaddrinfo(name, 0, &hint, &ai)) { + case EAI_NONAME: + h_errno = HOST_NOT_FOUND; + break; + case EAI_AGAIN: + h_errno = TRY_AGAIN; + break; + case EAI_FAIL: + h_errno = NO_RECOVERY; + break; + default: + case EAI_MEMORY: + case EAI_SYSTEM: + h_errno = NO_DATA; + break; + case 0: + break; + } + + strcpy(h_canon, ai->ai_canonname); + h.h_name = h_canon; + h.h_aliases = h_aliases; + h.h_aliases[0] = h_canon; + h.h_aliases[1] = strcmp(h_canon, name) ? (char *)name : 0; + h.h_length = 4; + h.h_addr_list = h_addr_list; + for (i=0, p=ai; i<sizeof h_addr_data/4 && p; i++, p=p->ai_next) { + h.h_addr_list[i] = h_addr_data[i]; + memcpy(h.h_addr_list[i], + &((struct sockaddr_in *)p->ai_addr)->sin_addr, 4); + } + h.h_addr_list[i] = 0; + h.h_addrtype = AF_INET; + freeaddrinfo(ai); + return &h; +} +#endif diff --git a/src/network/gethostbyname2.c b/src/network/gethostbyname2.c new file mode 100644 index 00000000..9fbe2647 --- /dev/null +++ b/src/network/gethostbyname2.c @@ -0,0 +1,16 @@ +#define _GNU_SOURCE + +#include <sys/socket.h> +#include <netdb.h> +#include <string.h> +#include <netinet/in.h> + +struct hostent *gethostbyname2(const char *name, int af) +{ + static struct hostent h; + static long buf[512/sizeof(long)]; + struct hostent *res; + if (gethostbyname2_r(name, af, &h, + (void *)buf, sizeof buf, &res, &h_errno)) return 0; + return &h; +} diff --git a/src/network/gethostbyname2_r.c b/src/network/gethostbyname2_r.c new file mode 100644 index 00000000..c2ed75b4 --- /dev/null +++ b/src/network/gethostbyname2_r.c @@ -0,0 +1,99 @@ +#define _GNU_SOURCE + +#include <sys/socket.h> +#include <netdb.h> +#include <string.h> +#include <netinet/in.h> +#include <errno.h> +#include <inttypes.h> + +int gethostbyname2_r(const char *name, int af, + struct hostent *h, char *buf, size_t buflen, + struct hostent **res, int *err) +{ + struct addrinfo hint = { + .ai_family = af==AF_INET6 ? af : AF_INET, + .ai_flags = AI_CANONNAME + }; + struct addrinfo *ai, *p; + int i; + size_t need; + const char *canon; + + af = hint.ai_family; + + /* Align buffer */ + i = (uintptr_t)buf & sizeof(char *)-1; + if (i) { + if (buflen < sizeof(char *)-i) { + errno = ERANGE; + return -1; + } + buf += sizeof(char *)-i; + buflen -= sizeof(char *)-i; + } + + getaddrinfo(name, 0, &hint, &ai); + switch (getaddrinfo(name, 0, &hint, &ai)) { + case EAI_NONAME: + *err = HOST_NOT_FOUND; + return -1; + case EAI_AGAIN: + *err = TRY_AGAIN; + return -1; + default: + case EAI_MEMORY: + case EAI_SYSTEM: + case EAI_FAIL: + *err = NO_RECOVERY; + return -1; + case 0: + break; + } + + h->h_addrtype = af; + h->h_length = af==AF_INET6 ? 16 : 4; + + canon = ai->ai_canonname ? ai->ai_canonname : name; + need = 4*sizeof(char *); + for (i=0, p=ai; p; i++, p=p->ai_next) + need += sizeof(char *) + h->h_length; + need += strlen(name)+1; + need += strlen(canon)+1; + + if (need > buflen) { + freeaddrinfo(ai); + errno = ERANGE; + return -1; + } + + h->h_aliases = (void *)buf; + buf += 3*sizeof(char *); + h->h_addr_list = (void *)buf; + buf += (i+1)*sizeof(char *); + + h->h_name = h->h_aliases[0] = buf; + strcpy(h->h_name, canon); + buf += strlen(h->h_name)+1; + + if (strcmp(h->h_name, name)) { + h->h_aliases[1] = buf; + strcpy(h->h_aliases[1], name); + buf += strlen(h->h_aliases[1])+1; + } else h->h_aliases[1] = 0; + + h->h_aliases[2] = 0; + + for (i=0, p=ai; p; i++, p=p->ai_next) { + h->h_addr_list[i] = (void *)buf; + buf += h->h_length; + memcpy(h->h_addr_list[i], + &((struct sockaddr_in *)p->ai_addr)->sin_addr, + h->h_length); + } + h->h_addr_list[i] = 0; + + *res = h; + freeaddrinfo(ai); + return 0; +} diff --git a/src/network/gethostbyname_r.c b/src/network/gethostbyname_r.c new file mode 100644 index 00000000..cd872541 --- /dev/null +++ b/src/network/gethostbyname_r.c @@ -0,0 +1,11 @@ +#define _GNU_SOURCE + +#include <sys/socket.h> +#include <netdb.h> + +int gethostbyname_r(const char *name, + struct hostent *h, char *buf, size_t buflen, + struct hostent **res, int *err) +{ + return gethostbyname2_r(name, AF_INET, h, buf, buflen, res, err); +} diff --git a/src/network/getnameinfo.c b/src/network/getnameinfo.c new file mode 100644 index 00000000..0763ca88 --- /dev/null +++ b/src/network/getnameinfo.c @@ -0,0 +1,54 @@ +#include <netdb.h> +#include <limits.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include "__dns.h" + +int getnameinfo(const struct sockaddr *sa, socklen_t sl, + char *node, socklen_t nodelen, + char *serv, socklen_t servlen, + int flags) +{ + char buf[256]; + unsigned char reply[512]; + int af = sa->sa_family; + unsigned char *a; + + switch (af) { + case AF_INET: + a = (void *)&((struct sockaddr_in *)sa)->sin_addr; + if (sl != sizeof(struct sockaddr_in)) return EAI_FAMILY; + break; + case AF_INET6: + a = (void *)&((struct sockaddr_in6 *)sa)->sin6_addr; + if (sl != sizeof(struct sockaddr_in6)) return EAI_FAMILY; + break; + default: + return EAI_FAMILY; + } + + if (node && nodelen) { + if ((flags & NI_NUMERICHOST) + || __dns_query(reply, a, af, 1) <= 0 + || __dns_get_rr(buf, 0, 256, 1, reply, RR_PTR, 1) <= 0) + { + if (flags & NI_NAMEREQD) return EAI_NONAME; + inet_ntop(af, a, buf, sizeof buf); + } + if (strlen(buf) >= nodelen) return EAI_OVERFLOW; + strcpy(node, buf); + } + + if (serv && servlen) { + if (snprintf(buf, sizeof buf, "%d", + ntohs(((struct sockaddr_in *)sa)->sin_port))>=servlen) + return EAI_OVERFLOW; + strcpy(serv, buf); + } + + return 0; +} diff --git a/src/network/getpeername.c b/src/network/getpeername.c new file mode 100644 index 00000000..7ecbe375 --- /dev/null +++ b/src/network/getpeername.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int getpeername(int fd, struct sockaddr *addr, socklen_t *len) +{ + unsigned long args[] = { fd, (unsigned long)addr, (unsigned long)len }; + return syscall2(__NR_socketcall, SYS_GETPEERNAME, (long)args); +} diff --git a/src/network/getservbyname.c b/src/network/getservbyname.c new file mode 100644 index 00000000..0b00ce11 --- /dev/null +++ b/src/network/getservbyname.c @@ -0,0 +1,12 @@ +#define _GNU_SOURCE +#include <netdb.h> + +struct servent *getservbyname(const char *name, const char *prots) +{ + static struct servent se; + static long buf[32/sizeof(long)]; + struct servent *res; + if (getservbyname_r(name, prots, &se, (void *)buf, sizeof buf, &res)) + return 0; + return &se; +} diff --git a/src/network/getservbyname_r.c b/src/network/getservbyname_r.c new file mode 100644 index 00000000..5c025150 --- /dev/null +++ b/src/network/getservbyname_r.c @@ -0,0 +1,41 @@ +#define _GNU_SOURCE +#include <sys/socket.h> +#include <netinet/in.h> +#include <netdb.h> +#include <inttypes.h> +#include <errno.h> +#include <string.h> + +int getservbyname_r(const char *name, const char *prots, + struct servent *se, char *buf, size_t buflen, struct servent **res) +{ + struct addrinfo *ai, hint = { .ai_family = AF_INET }; + int i; + + /* Align buffer */ + i = (uintptr_t)buf & sizeof(char *)-1; + if (!i) i = sizeof(char *); + if (buflen < 3*sizeof(char *)-i) { + errno = ERANGE; + return -1; + } + buf += sizeof(char *)-i; + buflen -= sizeof(char *)-i; + + if (!strcmp(prots, "tcp")) hint.ai_protocol = IPPROTO_TCP; + else if (!strcmp(prots, "udp")) hint.ai_protocol = IPPROTO_UDP; + else return -1; + + if (getaddrinfo(0, name, &hint, &ai) < 0) return -1; + + se->s_name = (char *)name; + se->s_aliases = (void *)buf; + se->s_aliases[0] = se->s_name; + se->s_aliases[1] = 0; + se->s_port = ((struct sockaddr_in *)ai->ai_addr)->sin_port; + se->s_proto = (char *)prots; + + freeaddrinfo(ai); + *res = se; + return 0; +} diff --git a/src/network/getservbyport.c b/src/network/getservbyport.c new file mode 100644 index 00000000..c9ecbb11 --- /dev/null +++ b/src/network/getservbyport.c @@ -0,0 +1,12 @@ +#define _GNU_SOURCE +#include <netdb.h> + +struct servent *getservbyport(int port, const char *prots) +{ + static struct servent se; + static long buf[32/sizeof(long)]; + struct servent *res; + if (getservbyport_r(port, prots, &se, (void *)buf, sizeof buf, &res)) + return 0; + return &se; +} diff --git a/src/network/getservbyport_r.c b/src/network/getservbyport_r.c new file mode 100644 index 00000000..004a6168 --- /dev/null +++ b/src/network/getservbyport_r.c @@ -0,0 +1,43 @@ +#define _GNU_SOURCE +#include <sys/socket.h> +#include <netinet/in.h> +#include <netdb.h> +#include <inttypes.h> +#include <errno.h> +#include <string.h> + +int getservbyport_r(int port, const char *prots, + struct servent *se, char *buf, size_t buflen, struct servent **res) +{ + int i; + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_port = port, + }; + + /* Align buffer */ + i = (uintptr_t)buf & sizeof(char *)-1; + if (!i) i = sizeof(char *); + if (buflen < 3*sizeof(char *)-i) { + errno = ERANGE; + return -1; + } + buf += sizeof(char *)-i; + buflen -= sizeof(char *)-i; + + if (strcmp(prots, "tcp") && strcmp(prots, "udp")) return -1; + + se->s_port = port; + se->s_proto = (char *)prots; + se->s_aliases = (void *)buf; + buf += 2*sizeof(char *); + buflen -= 2*sizeof(char *); + se->s_aliases[1] = 0; + se->s_aliases[0] = se->s_name = buf; + + if (getnameinfo((void *)&sin, sizeof sin, 0, 0, buf, buflen, + strcmp(prots, "udp") ? 0 : NI_DGRAM) < 0) return -1; + + *res = se; + return 0; +} diff --git a/src/network/getsockname.c b/src/network/getsockname.c new file mode 100644 index 00000000..4b1002f8 --- /dev/null +++ b/src/network/getsockname.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int getsockname(int fd, struct sockaddr *addr, socklen_t *len) +{ + unsigned long args[] = { fd, (unsigned long)addr, (unsigned long)len }; + return syscall2(__NR_socketcall, SYS_GETSOCKNAME, (long)args); +} diff --git a/src/network/getsockopt.c b/src/network/getsockopt.c new file mode 100644 index 00000000..8c818863 --- /dev/null +++ b/src/network/getsockopt.c @@ -0,0 +1,13 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int getsockopt(int fd, int level, int optname, void *optval, socklen_t *optlen) +{ + unsigned long args[] = { + fd, level, optname, + (unsigned long)optval, + (unsigned long)optlen + }; + return syscall2(__NR_socketcall, SYS_GETSOCKOPT, (long)args); +} diff --git a/src/network/h_errno.c b/src/network/h_errno.c new file mode 100644 index 00000000..73ead046 --- /dev/null +++ b/src/network/h_errno.c @@ -0,0 +1 @@ +int h_errno; diff --git a/src/network/hstrerror.c b/src/network/hstrerror.c new file mode 100644 index 00000000..b7a6ab6c --- /dev/null +++ b/src/network/hstrerror.c @@ -0,0 +1,16 @@ +#define _GNU_SOURCE +#include <netdb.h> + +static const char msgs[] = + "Host not found\0" + "Try again\0" + "Non-recoverable error\0" + "Address not available\0" + "\0Unknown error"; + +const char *hstrerror(int ecode) +{ + const char *s; + for (s=msgs, ecode--; ecode && *s; ecode--, s++) for (; *s; s++); + return *s ? s : s+1; +} diff --git a/src/network/htonl.c b/src/network/htonl.c new file mode 100644 index 00000000..b21dace0 --- /dev/null +++ b/src/network/htonl.c @@ -0,0 +1,10 @@ +#include <netinet/in.h> + +uint32_t htonl(uint32_t n) +{ + union { + uint8_t b[4]; + uint32_t i; + } u = { { n>>24, n>>16, n>>8, n } }; + return u.i; +} diff --git a/src/network/htons.c b/src/network/htons.c new file mode 100644 index 00000000..522504a5 --- /dev/null +++ b/src/network/htons.c @@ -0,0 +1,10 @@ +#include <netinet/in.h> + +uint16_t htons(uint16_t n) +{ + union { + uint8_t b[2]; + uint16_t s; + } u = { { n>>8, n } }; + return u.s; +} diff --git a/src/network/in6addr_any.c b/src/network/in6addr_any.c new file mode 100644 index 00000000..995387fa --- /dev/null +++ b/src/network/in6addr_any.c @@ -0,0 +1,3 @@ +#include <netinet/in.h> + +const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; diff --git a/src/network/in6addr_loopback.c b/src/network/in6addr_loopback.c new file mode 100644 index 00000000..b96005b8 --- /dev/null +++ b/src/network/in6addr_loopback.c @@ -0,0 +1,3 @@ +#include <netinet/in.h> + +const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT; diff --git a/src/network/inet_addr.c b/src/network/inet_addr.c new file mode 100644 index 00000000..84137281 --- /dev/null +++ b/src/network/inet_addr.c @@ -0,0 +1,11 @@ +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include "__dns.h" + +in_addr_t inet_addr(const char *p) +{ + struct sockaddr_in sin; + if (__ipparse(&sin, AF_INET, p)) return -1; + return sin.sin_addr.s_addr; +} diff --git a/src/network/inet_aton.c b/src/network/inet_aton.c new file mode 100644 index 00000000..ea4ee165 --- /dev/null +++ b/src/network/inet_aton.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <arpa/inet.h> + +int inet_aton(const char *cp, struct in_addr *inp) +{ + return inet_pton(AF_INET, cp, (void *)inp) > 0; +} diff --git a/src/network/inet_ntoa.c b/src/network/inet_ntoa.c new file mode 100644 index 00000000..71411e0b --- /dev/null +++ b/src/network/inet_ntoa.c @@ -0,0 +1,10 @@ +#include <arpa/inet.h> +#include <stdio.h> + +char *inet_ntoa(struct in_addr in) +{ + static char buf[16]; + unsigned char *a = (void *)∈ + snprintf(buf, sizeof buf, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); + return buf; +} diff --git a/src/network/inet_ntop.c b/src/network/inet_ntop.c new file mode 100644 index 00000000..3e8a6db0 --- /dev/null +++ b/src/network/inet_ntop.c @@ -0,0 +1,48 @@ +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> + +const char *inet_ntop(int af, const void *a0, char *s, socklen_t l) +{ + const unsigned char *a = a0; + int i, j, max, best; + char buf[100]; + + switch (af) { + case AF_INET: + if (snprintf(s, l, "%d.%d.%d.%d", a[0],a[1],a[2],a[3]) < l) + return s; + break; + case AF_INET6: + memset(buf, 'x', sizeof buf); + buf[sizeof buf-1]=0; + snprintf(buf, sizeof buf, + "%.0x%x:%.0x%x:%.0x%x:%.0x%x:%.0x%x:%.0x%x:%.0x%x:%.0x%x", + a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7], + a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15]); + /* Replace longest /(^0|:)[:0]{2,}/ with "::" */ + for (i=best=0, max=2; buf[i]; i++) { + if (i && buf[i] != ':') continue; + j = strspn(buf+i, ":0"); + if (j>max) best=i, max=j; + } + if (max>2) { + buf[best] = buf[best+1] = ':'; + strcpy(buf+best+2, buf+best+max); + } + if (strlen(buf) < l) { + strcpy(s, buf); + return s; + } + break; + default: + errno = EAFNOSUPPORT; + return 0; + } + errno = ENOSPC; + return 0; +} diff --git a/src/network/inet_pton.c b/src/network/inet_pton.c new file mode 100644 index 00000000..349c4025 --- /dev/null +++ b/src/network/inet_pton.c @@ -0,0 +1,31 @@ +#include <sys/socket.h> +#include <netdb.h> +#include <arpa/inet.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include "__dns.h" + +int inet_pton(int af, const char *s, void *a0) +{ + unsigned char *a = a0; + const char *z; + unsigned long x; + int i; + + /* Reimplement this because inet_pton cannot accept special v4 forms */ + if (af==AF_INET) { + for (i=0; i<4 && *s; i++) { + a[i] = x = strtoul(s, (char **)&z, 10); + if (!isdigit(*s) || z==s || (*z && *z != '.') || x>255) + return 0; + s=z+1; + } + return 0; + } else if (af==AF_INET6) { + return !__ipparse(a, AF_INET6, s); + } + + errno = EAFNOSUPPORT; + return 0; +} diff --git a/src/network/listen.c b/src/network/listen.c new file mode 100644 index 00000000..7c8c1a8a --- /dev/null +++ b/src/network/listen.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int listen(int fd, int backlog) +{ + unsigned long args[] = { fd, backlog }; + return syscall2(__NR_socketcall, SYS_LISTEN, (long)args); +} diff --git a/src/network/ntohl.c b/src/network/ntohl.c new file mode 100644 index 00000000..64379196 --- /dev/null +++ b/src/network/ntohl.c @@ -0,0 +1,10 @@ +#include <netinet/in.h> + +uint32_t ntohl(uint32_t n) +{ + union { + uint32_t i; + uint8_t b[4]; + } u = { n }; + return (u.b[0]<<24) | (u.b[1]<<16) | (u.b[2]<<8) | u.b[3]; +} diff --git a/src/network/ntohs.c b/src/network/ntohs.c new file mode 100644 index 00000000..3544a479 --- /dev/null +++ b/src/network/ntohs.c @@ -0,0 +1,10 @@ +#include <netinet/in.h> + +uint16_t ntohs(uint16_t n) +{ + union { + uint16_t s; + uint8_t b[2]; + } u = { n }; + return (u.b[0]<<8) | u.b[1]; +} diff --git a/src/network/proto.c b/src/network/proto.c new file mode 100644 index 00000000..8c25c53a --- /dev/null +++ b/src/network/proto.c @@ -0,0 +1,58 @@ +#include <netdb.h> +#include <stdio.h> +#include <string.h> + +/* do we really need all these?? */ + +static int idx; +static const unsigned char protos[][6] = { + "\000ip", + "\001icmp", + "\002igmp", + "\003ggp", + "\006tcp", + "\014pup", + "\021udp", + "\026idp", + "\377raw" + "\0\0" +}; + +void endprotoent(void) +{ + idx = 0; +} + +void setprotoent(int stayopen) +{ + idx = 0; +} + +struct protoent *getprotoent(void) +{ + static struct protoent p; + static const char *aliases; + if (!protos[idx][1]) return NULL; + p.p_proto = protos[idx][0]; + p.p_name = (char *)protos[idx++]+1; + p.p_aliases = (char **)&aliases; + return &p; +} + +struct protoent *getprotobyname(const char *name) +{ + struct protoent *p; + endprotoent(); + do p = getprotoent(); + while (p && strcmp(name, p->p_name)); + return p; +} + +struct protoent *getprotobynumber(int num) +{ + struct protoent *p; + endprotoent(); + do p = getprotoent(); + while (p && p->p_proto != num); + return p; +} diff --git a/src/network/recv.c b/src/network/recv.c new file mode 100644 index 00000000..521a4b19 --- /dev/null +++ b/src/network/recv.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t recv(int fd, void *buf, size_t len, int flags) +{ + unsigned long args[] = { fd, (unsigned long)buf, len, flags }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_RECV, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/recvfrom.c b/src/network/recvfrom.c new file mode 100644 index 00000000..df50114b --- /dev/null +++ b/src/network/recvfrom.c @@ -0,0 +1,17 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t recvfrom(int fd, void *buf, size_t len, int flags, struct sockaddr *addr, socklen_t *alen) +{ + unsigned long args[] = { + fd, (unsigned long)buf, len, flags, + (unsigned long)addr, (unsigned long)alen + }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_RECVFROM, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/recvmsg.c b/src/network/recvmsg.c new file mode 100644 index 00000000..ead16f9c --- /dev/null +++ b/src/network/recvmsg.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t recvmsg(int fd, struct msghdr *msg, int flags) +{ + unsigned long args[] = { fd, (unsigned long)msg, flags }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_RECVMSG, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/res_init.c b/src/network/res_init.c new file mode 100644 index 00000000..cbd5b155 --- /dev/null +++ b/src/network/res_init.c @@ -0,0 +1,4 @@ +int res_init() +{ + return 0; +} diff --git a/src/network/res_query.c b/src/network/res_query.c new file mode 100644 index 00000000..4ebeb102 --- /dev/null +++ b/src/network/res_query.c @@ -0,0 +1,20 @@ +#include <netdb.h> +#include "__dns.h" + +int res_query(const char *name, int class, int type, unsigned char *dest, int len) +{ + if (class != 1 || len < 512) + return -1; + switch(__dns_doqueries(dest, name, &type, 1)) { + case EAI_NONAME: + h_errno = HOST_NOT_FOUND; + return -1; + case EAI_AGAIN: + h_errno = TRY_AGAIN; + return -1; + case EAI_FAIL: + h_errno = NO_RECOVERY; + return -1; + } + return 512; +} diff --git a/src/network/send.c b/src/network/send.c new file mode 100644 index 00000000..d72fb03c --- /dev/null +++ b/src/network/send.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t send(int fd, const void *buf, size_t len, int flags) +{ + unsigned long args[] = { fd, (unsigned long)buf, len, flags }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_SEND, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/sendmsg.c b/src/network/sendmsg.c new file mode 100644 index 00000000..ea2fe482 --- /dev/null +++ b/src/network/sendmsg.c @@ -0,0 +1,14 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t sendmsg(int fd, const struct msghdr *msg, int flags) +{ + unsigned long args[] = { fd, (unsigned long)msg, flags }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_SENDMSG, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/sendto.c b/src/network/sendto.c new file mode 100644 index 00000000..5d224b0b --- /dev/null +++ b/src/network/sendto.c @@ -0,0 +1,17 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" +#include "libc.h" + +ssize_t sendto(int fd, const void *buf, size_t len, int flags, const struct sockaddr *addr, socklen_t alen) +{ + unsigned long args[] = { + fd, (unsigned long)buf, len, flags, + (unsigned long)addr, alen + }; + ssize_t r; + CANCELPT_BEGIN; + r = syscall2(__NR_socketcall, SYS_SENDTO, (long)args); + CANCELPT_END; + return r; +} diff --git a/src/network/serv.c b/src/network/serv.c new file mode 100644 index 00000000..5ade6ad1 --- /dev/null +++ b/src/network/serv.c @@ -0,0 +1,16 @@ +#include <netdb.h> +#include <stdio.h> +#include <string.h> + +void endservent(void) +{ +} + +void setservent(int stayopen) +{ +} + +struct servent *getservent(void) +{ + return 0; +} diff --git a/src/network/setsockopt.c b/src/network/setsockopt.c new file mode 100644 index 00000000..b50303b8 --- /dev/null +++ b/src/network/setsockopt.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int setsockopt(int fd, int level, int optname, const void *optval, socklen_t optlen) +{ + unsigned long args[] = { fd, level, optname, (unsigned long)optval, optlen }; + return syscall2(__NR_socketcall, SYS_SETSOCKOPT, (long)args); +} diff --git a/src/network/shutdown.c b/src/network/shutdown.c new file mode 100644 index 00000000..91950c8a --- /dev/null +++ b/src/network/shutdown.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int shutdown(int fd, int how) +{ + unsigned long args[] = { fd, how }; + return syscall2(__NR_socketcall, SYS_SHUTDOWN, (long)args); +} diff --git a/src/network/sockatmark.c b/src/network/sockatmark.c new file mode 100644 index 00000000..5328a855 --- /dev/null +++ b/src/network/sockatmark.c @@ -0,0 +1,11 @@ +#include <sys/socket.h> +#include <sys/ioctl.h> +#include "socketcall.h" + +int sockatmark(int s) +{ + int ret; + if (ioctl(s, SIOCATMARK, &ret) < 0) + return -1; + return ret; +} diff --git a/src/network/socket.c b/src/network/socket.c new file mode 100644 index 00000000..afaeb411 --- /dev/null +++ b/src/network/socket.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int socket(int domain, int type, int protocol) +{ + unsigned long args[] = { domain, type, protocol }; + return syscall2(__NR_socketcall, SYS_SOCKET, (long)args); +} diff --git a/src/network/socketcall.h b/src/network/socketcall.h new file mode 100644 index 00000000..9ae98587 --- /dev/null +++ b/src/network/socketcall.h @@ -0,0 +1,24 @@ +#define SYS_SOCKET 1 +#define SYS_BIND 2 +#define SYS_CONNECT 3 +#define SYS_LISTEN 4 +#define SYS_ACCEPT 5 +#define SYS_GETSOCKNAME 6 +#define SYS_GETPEERNAME 7 +#define SYS_SOCKETPAIR 8 +#define SYS_SEND 9 +#define SYS_RECV 10 +#define SYS_SENDTO 11 +#define SYS_RECVFROM 12 +#define SYS_SHUTDOWN 13 +#define SYS_SETSOCKOPT 14 +#define SYS_GETSOCKOPT 15 +#define SYS_SENDMSG 16 +#define SYS_RECVMSG 17 + +#define FIOSETOWN 0x8901 +#define SIOCSPGRP 0x8902 +#define FIOGETOWN 0x8903 +#define SIOCGPGRP 0x8904 +#define SIOCATMARK 0x8905 +#define SIOCGSTAMP 0x8906 diff --git a/src/network/socketpair.c b/src/network/socketpair.c new file mode 100644 index 00000000..65a47fd9 --- /dev/null +++ b/src/network/socketpair.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include "syscall.h" +#include "socketcall.h" + +int socketpair(int domain, int type, int protocol, int fd[2]) +{ + unsigned long args[] = { domain, type, protocol, (unsigned long)fd }; + return syscall2(__NR_socketcall, SYS_SOCKETPAIR, (long)args); +} |